Call Processing System and Method

1. A method for processing a call in a wireless communication device comprising the steps of: receiving an incoming call message; reading a push to talk (PTT) indicator in the message at a main control module before sending the incoming call message to a user interface module; sending the PTT indicator from the main control module to the user interface module in a first processing pass; sending the remaining incoming call message from the main control module to the user interface module in a second processing pass; after reading the PTT indicator, sending a PTT signal indicative of the PTT indicator to the user interface module; determining whether the incoming call message relates to a PTT call; writing a PTT bit to yes or high, responsive to the step of determining; combining the incoming call signal and the PTT bit into a single combined alert message, and wherein the steps of sending a PTT signal and sending an incoming call signal are performed by sending the combined alert message to the user interface module.

2. The method of claim 1 , further comprising the step of: transmitting a bypass alert message to the user interface module.

3. The method of claim 2 , wherein the step of transmitting further comprises: transmitting the bypass alert message from a main control module.

4. The method of claim 3 , wherein the incoming call signal comprises an incoming call command.

5. The method of claim 1 , wherein the combined alert message comprises an incoming call command.

6. The method of claim 1 , wherein the incoming call message comprises a PTT over voice incoming call message.

7. The method of claim 6 , further comprising the step of: verifying that the incoming call message is a PTT over voice incoming call message.

8. The method of claim 6 , wherein the incoming call message comprises a voice PTT over voice incoming call message.

9. A computer readable medium embodying instructions for performing a method of processing a call in a wireless communication device, the method comprising the steps of: receiving an incoming call message; reading a push to talk (PTT) indicator in the message at a main control module before sending the incoming call message to a user interface module; sending the PTT indicator and the incoming call message from the main control module to the user interface module; sending the remaining incoming call message from the main control module to the user interface module in a second processing pass; after reading the PTT indicator, sending a PTT signal indicative of the PTT indicator to the user interface module; determining whether the incoming call message relates to a PTT call writing a PTT bit to yes or high, responsive to the step of determining; combining the incoming call signal and the PTT bit into a single combined alert message, and wherein the steps of sending a PTT signal and sending an incoming call signal are performed by sending the combined alert message to the user interface module.

10. The computer readable medium of claim 9 , the method further comprising the step of: transmitting a bypass alert message to the user interface module.

11. The computer readable medium of claim 10 , wherein the step of transmitting further comprises: transmitting the bypass alert message from a main control module.

12. The computer readable medium of claim 9 , wherein the incoming call message comprises a voice over voice incoming call message.

13. The computer readable medium of claim 12 , the method further comprising the step of: verifying that the incoming call message is a voice over voice incoming call message.